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Meet Our Environmental Team

Claudia Thompson-Deahl is the Environmental Resources Senior Manager for the Reston Association and has been with RA for over 33 years. She is a certified Arborist and a charter member of the Virginia Native Plant Society. Claudia promotes co-existing with wildlife and planting trees. Claudia is committed to caring for our shared natural resource treasure – RA open space.

Brian Kayhartis RA's Environmental Resources Supervisor. He joined RA in November and has a wealth of experience, including over seven years in horticulture and tree preservation.

Will Peterson is Reston Association's Watershed Manager. He previously worked as a watershed specialist and as an intern for RA while pursuing his Masters of Park and Resources Management during the summer of 2013. He has a BS in Forest Resources Management and successfully completed the above Masters in spring 2014. He previously worked as a Naturalist/Interpreter for Missouri State Parks and as a Police Officer for Manhattan Beach Police Department.

Keith Kanzler is the Senior Arborist for Reston Association and has been with RA for over 20 years. He has been a climbing judge for 14 years for the MAC-ISA chapter and the International Tree Climbing Championship and this year for the North American Tree Climbing Championship. Kanzler also works with ArborMaster in a training capacity. He is an ISA Certified Arborist and trained MAC-ISA Gear inspector.

Jason Perry (JP) joined RA as an Arborist II in March 2013. He is a graduate from Nova Scotia Agricultural College’s Landscape Horticulture (TY) program. He has worked in the DC metro area performing arboricultural services from specialized pruning, cabling/bracing, removing, and tree preservation since 1999. He has competed and been a safety technician and gear inspector for MAC-ISA Tree Climbing Competition, in addition to assisting in training programs in the region since 2001. He is an ISA Certified Arborist and ISA Qualified Tree Risk Assessor.

Jaime Argueta is an Environmental Resource Worker II. He has worked for RA since 2003, starting as a seasonal for the natural areas and then as a full-time employee for the arborists crew. Jaime left in 2006 to work for a construction company for three years and returned as a seasonal on the mowing/grounds crew. Jaime is a Registered Pesticide Technician. In 2014, he completed the full circle to once again help maintain Reston’s natural areas.